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OSM Postcode Mapping for LL57 4 Postal Sector

The circles on the map above are the postcode unit 'centriods' from Code-Point Open, under the Open Government Licence. The 'centriod' is calculated by taking the average of the coordinates of all the delivery points with that postcode, and then snapping that location to the nearest delivery point in that postcode. The data may be freely used in OpenStreetMap, but please make sure you understand it first. Also please only add postcodes to objects representing addressable entities; do not add the postcode centroids as themslves. Suggested source tag code-point_open

The circles are coloured by whether or not there is at least one OSM object with that value in its addr:postcode tag. Click on a point to see the postcode. The numbers in brackets are the number of OSM objects with that postcode.

The centroids are the location of the nearest 'delivery point' to the arithmetic mean of the coordinates of all the delivery points within that unit. Those points with a codepoint PQI greater than 40 are excluded from the map above. (Higher values are typically not geographically accurate. In particular, PQI=50 is used for new postcodes before the location has been determined. The location given for such postcodes seems to be derived from other existing postcodes with similar units letters, which may not be close to the new postcode.)

The pale blue lines from the circles join each Code-Point Open centroid to the mean coordiantes of all the OSM objects with that postcode. (For ways an relations, the centre of the rectangular bounding box is used at the coordinates for the OSM object.) Long lines may indicate missing or incorrect OSM objects for that postcode. In particular, if all the postcodes in a givne unit are correctly mapped, the circle should be located on the nearest delivery point within that postcode to the other end of the blue line.

The OSM data for the number of objects with each unit is usually updated once a day at about 10:15 UTC, with data from about 20:30 UTC the previous day. The data used to compute the OSM mean position is updated less frequently, usually about once a week.

District Sector Units Geo. Units Mapped %
LL57 4 222 221 17 7.7%

All units within this sector:

Unit PQI First Seen Last Seen Street Name ML Mapped
LL57 4AA 10 0
LL57 4AB 10 0
LL57 4AD 10 0
LL57 4AE 10 0
LL57 4AF 10 0
LL57 4AG 10 0
LL57 4AH 10 Ffordd Tanrhiw 4
LL57 4AJ 10 0
LL57 4AL 10 0
LL57 4AN 10 0
LL57 4AP 10 0
LL57 4AR 10 0
LL57 4AS 10 0
LL57 4AT 10 0
LL57 4AU 10 0
LL57 4AW 10 0
LL57 4AX 10 0
LL57 4AY 10 0
LL57 4AZ 10 0
LL57 4BA 10 0
LL57 4BB 10 0
LL57 4BD 10 0
LL57 4BE 10 0
LL57 4BG 10 Bangor Services 6
LL57 4BJ 10 0
LL57 4BL 10 Ffordd Gelli Morgan, Parc Menai 1
LL57 4BN 10 0
LL57 4BP 10 0
LL57 4BQ 10 0
LL57 4BS 10 0
LL57 4BT 10 0
LL57 4BU 10 0
LL57 4BW 10 0
LL57 4BX 10 0
LL57 4BY 10 0
LL57 4BZ 10 0
LL57 4DA 10 0
LL57 4DB 10 0
LL57 4DE 10 2017‑01 0
LL57 4DF 10 0
LL57 4DG 10 0
LL57 4DH 10 0
LL57 4DJ 10 0
LL57 4DL 10 0
LL57 4DN 10 0
LL57 4DP 10 0
LL57 4DQ 10 0
LL57 4DR 10 0
LL57 4DS 10 0
LL57 4DT 10 0
LL57 4DU 10 0
LL57 4DX 10 0
LL57 4DY 10 0
LL57 4DZ 10 0
LL57 4EA 10 0
LL57 4EB 10 0
LL57 4ED 10 0
LL57 4EE 10 0
LL57 4EF 10 0
LL57 4EG 10 0
LL57 4EH 10 1
LL57 4EJ 10 0
LL57 4EL 10 0
LL57 4EN 10 0
LL57 4EP 10 0
LL57 4EQ 10 0
LL57 4ER 10 0
LL57 4ES 10 0
LL57 4ET 10 0
LL57 4EU 10 0
LL57 4EW 10 0
LL57 4EX 10 0
LL57 4EY 10 0
LL57 4EZ 10 0
LL57 4FA 10 Parc Menai 3
LL57 4FB 10 0
LL57 4FD 10 0
LL57 4FE 10 0
LL57 4FF 10 0
LL57 4FG 10 0
LL57 4FH 10 0
LL57 4FJ 10 0
LL57 4FL 10 0
LL57 4GA 10 0
LL57 4GD 10 0
LL57 4HA 10 0
LL57 4HB 10 0
LL57 4HD 10 0
LL57 4HE 10 0
LL57 4HF 10 0
LL57 4HG 10 0
LL57 4HH 10 0
LL57 4HJ 10 0
LL57 4HN 10 0
LL57 4HP 10 0
LL57 4HR 10 0
LL57 4HT 10 0
LL57 4HU 10 1
LL57 4HW 10 0
LL57 4HY 10 0
LL57 4LA 10 2018‑10 0
LL57 4LB 10 0
LL57 4LD 10 0
LL57 4LE 10 0
LL57 4LG 10 0
LL57 4LH 10 0
LL57 4LJ 10 0
LL57 4LN 10 0
LL57 4LP 10 0
LL57 4LQ 10 0
LL57 4LR 10 0
LL57 4LS 10 0
LL57 4LT 10 0
LL57 4LU 10 0
LL57 4LW 10 0
LL57 4LX 10 0
LL57 4LZ 10 0
LL57 4NA 10 0
LL57 4NB 10 0
LL57 4ND 10 0
LL57 4NE 10 0
LL57 4NF 10 0
LL57 4NG 10 0
LL57 4NH 10 0
LL57 4NL 10 0
LL57 4NN 10 0
LL57 4NP 10 0
LL57 4NR 10 0
LL57 4NS 10 0
LL57 4NT 10 0
LL57 4NU 10 0
LL57 4NW 10 0
LL57 4NY 10 0
LL57 4PA 10 0
LL57 4PB 10 0
LL57 4PD 10 0
LL57 4PE 10 0
LL57 4PF 10 0
LL57 4PG 10 1
LL57 4PH 10 0
LL57 4PL 10 0
LL57 4PN 10 0
LL57 4PP 10 0
LL57 4PR 10 0
LL57 4PS 10 0
LL57 4PT 10 0
LL57 4PU 10 0
LL57 4PW 10 0
LL57 4PY 10 0
LL57 4RA 10 0
LL57 4RB 10 0
LL57 4RD 10 0
LL57 4RE 10 0
LL57 4RF 10 0
LL57 4RG 10 0
LL57 4RH 10 1
LL57 4RJ 10 0
LL57 4RL 10 0
LL57 4RN 10 0
LL57 4RP 10 0
LL57 4RR 10 0
LL57 4RU 10 0
LL57 4RW 10 0
LL57 4RY 10 0
LL57 4SA 10 0
LL57 4SB 10 0
LL57 4SD 10 0
LL57 4SE 10 0
LL57 4SF 10 0
LL57 4SG 10 Llwybr Yr Ysgol 1
LL57 4SH 10 0
LL57 4SJ 10 Ffordd Caernarfon 4
LL57 4SN 10 0
LL57 4SP 10 0
LL57 4SR 10 0
LL57 4SS 10 0
LL57 4ST 10 0
LL57 4SU 10 Ffordd Caernarfon 17
LL57 4SW 10 0
LL57 4SX 10 0
LL57 4SY 10 0
LL57 4TA 10 0
LL57 4TB 10 Ffiodd Coed Mawr 35
LL57 4TD 10 0
LL57 4TE 10 0
LL57 4TF 10 0
LL57 4TG 10 0
LL57 4TH 10 Ffiodd Coed Mawr 25
LL57 4TJ 10 0
LL57 4TL 10 Bron Y De 1
LL57 4TN 10 0
LL57 4TQ 10 0
LL57 4TR 10 0
LL57 4TS 10 0
LL57 4TT 10 0
LL57 4TW 10 0
LL57 4TX 10 0
LL57 4UA 10 0
LL57 4UB 10 0
LL57 4UD 10 0
LL57 4UE 10 0
LL57 4UF 10 0
LL57 4UG 10 0
LL57 4UH 10 0
LL57 4UL 10 0
LL57 4UN 10 0
LL57 4UP 10 0
LL57 4UR 10 0
LL57 4UT 10 0
LL57 4UU 10 0
LL57 4UW 10 0
LL57 4UX 10 0
LL57 4UY 10 0
LL57 4WW 10 0
LL57 4WZ 10 0
LL57 4YA 10 0
LL57 4YB 10 0
LL57 4YD 10 Trem Ffrancon 1
LL57 4YG 10 0
LL57 4YH 10 4
LL57 4YL 10 2019‑12 0
LL57 4YN 10 0
LL57 4YP 10 0
LL57 4YR 10 0
LL57 4YS 10 0
LL57 4YU 10 0
LL57 4YW 10 Coed y Parc 2
LL57 4YY 10 0
LL57 4ZL 10 0
LL57 4ZN 10 0
LL57 4ZP 10 13 0
LL57 4ZR 10 0

Units with street mismatches in this sector:

Unit Mapped Dominant Street OSM Object Tagged Street
LL57 4EH 1 w300936783
LL57 4FA 3 Parc␣Menai w301069466
LL57 4HU 1 w252167757
LL57 4PG 1 w222351122
LL57 4RH 1 w228551516
LL57 4TB 35 Ffiodd␣Coed␣Mawr w157596313 Ffordd␣Coed␣Mawr
LL57 4YH 4 w362621297
LL57 4YH 4 w362621286
LL57 4YH 4 w48775571
LL57 4YH 4 w362621291
LL57 4YW 2 Coed␣y␣Parc w720204814 Hen␣Durnpike
Data derived from OpenStreetMap data, © OpenStreetMap Contributors, licensed under Open Data Commons Open Database License (ODbL). Data derived in part using Code-Point Open under the Open Government Licence v3; Contains OS data © Crown copyright and database right 2020; Contains Royal Mail data © Royal Mail copyright and Database right 2016; Contains National Statistics data © Crown copyright and database right 2020.